Fine Cyclo W-Series

High precision gearbox with extremely large hollow shaft & built-in pre-stage

Overview
Technical Info

High load precision gearbox with huge hollow bore and integrated pre-stage.

Less than 1 arcmin Lost Motion
Ideal for robot base axes
Input and output on same side
Hollow shaft rotates with output speed
Additional ratios possible on request (different pre-stage)
Motor coupling and adapter on request

Zero Mechanical Backlash
Lost Motion	<1 arcmin
Number of Sizes	2
Reduction Ratios	depending on pre-stage
Nominal Torque	2453 Nm / 4000 Nm
Acceleration Torque	6130 Nm / 10000 Nm
Max. Momentary Peak Torque	9810 Nm / 20000 nm
Output Speed	30 rpm / 25 rpm
Max. Bending Moment	9565 Nm / 22000 Nm
Bending Stiffness	up to 15700 Nm/arcmin
Max. Axial Load	13734 N / 29400 N
Torsional stiffness	up to 1960 Nm/arcmin

Key Product Facts

10000 Nm

Acceleration Torque

138 mm

Hollow Shaft Bore

1960 Nm/arcmin

Torsional stiffness

Advantages of Fine Cyclo W-Series

Very smooth traverse movements

High Torsional Stiffness

Small Moments Of Inertia

High Efficiency

Easy Assembly And Motor Mounting

Lifetime Lubricated For Any Position

Main dimensions and mass

Dimensions W-Series

Size	Length L [mm]	Diameter G [mm]	Diameter D [mm]	Diameter H [mm]	Mass [kg]
W55	129.5	355	258	90	68
W70	175.5	470	390	138	95

Design of input stage on customer request

Torque and Speed main data

Size	Nominal output torque (1) [Nm]	Max Accel. / decel. torque [Nm]	Max output speed [rpm]
W55	2453	6130	30
W70	4000	10000	25

(1) at output speed n2=15 rpm

Output bearing capacity

Size	Max permissible bending moment [Nm]	Max permissible axial load [N]
W55	9565	13734
W70	22000	29400

Available ratios

Size	Ratios
W55	64
W70	87.3

Additional ratios depending on prestage

Above technical specifications are intended for rough preselection only.

Document Type

Brochure

Technical Documentation

Status

- Any -

Current

Fine Cyclo Data Sheet

Technical Documentation

Motion Control Brochure

Brochure

Product Showcase Brochure

Brochure

CAD Downloads

Get our latest CAD files.

Download

Please contact us for specific motor adaption and other customization:

Contact

What options are available for the precision reducers?

We offer almost any desired option, from a motor adapter to an assembly that includes the motor and is ready for mounting right out of the box. Contact your Sumitomo representative for more details.

What is the shock load capacity of the precision Cyclos?

The Servo 100, Servo 6000, and Fine Cyclo reducers can withstand momentary shock loads as high as 500% of the rated torque.

How often does the Fine Cyclo® require maintenance?

Customers should never open the Fine Cyclo. The reduction stages of the FA-Series reducers are lubricated for life. Additionally, their internal components are matched in such a way that makes re-assembly very difficult for untrained personnel. If desired, customers may return Fine Cyclos to Sumitomo for grease replenishment after 5 years in order to increase service life.

Emergency After-Hours Support

757-485-3355

Sumitomo’s Product Support offers scheduled repair services as a one-stop-shop for all your related gearbox needs. For emergency repairs, we offer repair services 24 hours a day, 7 days a week.

Message Emergency Support Parts and Services

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